Practice Your Bow Sitting Down with Bullseye Shooting Techniques (Video)
Here's an obscure but effective archery tip for you. Practice shooting while sitting down. Most people, when they're practicing, want to stand up and drill targets. You need to learn to shoot while you're sitting down, with a minimum of movement.
It's important to learn the dynamics of shooting while you're sitting down and preferably shooting down. It you were to stand up you'd probably scare the deer away.